Improper Authentication in Parse Server - #VU149933
Published: September 15, 2026
Vulnerability identifier: #VU149933
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to spoof an external identity and pre-hijack accounts.
The vulnerability exists due to improper authentication in Parse Server's code-based authentication adapters when authentication data is supplied with a username and password to the login endpoint. A remote user can attach an arbitrary unverified provider identity to their own account to spoof an external identity and pre-hijack accounts.
Only deployments configured with an affected code-based authentication adapter are vulnerable.
Affected software
Parse Server
Remediation
Install security update from vendor's website.
Parse Server - addressed in versions 8.6.91, 9.10.1 alpha.10